The Gangchon railbike is a really fun experience. Going through all the themed musical tunnels combined with views of farms and the river beside you makes for an interesting activity. it was well organised, clear where to go, staff spoke English to instruct us about the railbike. after the rail bike, you jump on the romance train for a short but beautiful ride next to the river to your end point. snacks to purchase at the end point and opportunity to purchase a photo on the railbike for 8000 won for paper frame or 15000 won for glass frame.